INCOME TAXES - Schedule of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal									$ 6,146	$ (1,250)	$ 3,813
State and Local									477	360	252
Total Current Income Tax Expense (Benefit)									6,623	(890)	4,065
Deferred:
Federal									(68,907)	148,997	33,999
State and Local									(11,147)	19,521	847
Total Deferred Income Tax Expense (Benefit)									(80,054)	168,518	34,846
Total Income Tax Expense (Benefit)	$ (67,474)	$ 3,563	$ (2,608)	$ (6,912)	$ 46,575	$ 32,613	$ 82,844	$ 5,596	$ (73,431)	$ 167,628	$ 38,911